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Deep pour epoxy resins are a popular solution for creating transparent, bubble-free thick castings such as river tables and artistic projects. However, successful results rely on understanding the best pouring techniques.
How Thick Can You Pour in One Go?
Each deep pour epoxy resin has a specified maximum layer thickness—such as 5cm for products like EpoxyTable 5-Five. Pouring thicker than this in a single application can risk an excessive exothermic reaction, leading to overheating or even cracking. Always consult your resin’s guidelines and do not exceed the advised limit per pour.
Layering for Safe, Successful Casts
When you need more thickness than the product allows in one application, pour in several steps. After each layer, allow the resin to partially cure—usually 6–8 hours—before adding the next. This step-by-step approach prevents dangerous heat build-up and ensures a clear, stable cast throughout your project.
- Plan for extra working time when casting thick sections.
- Allow air to escape between layers to minimise bubbles.
- Follow product recommendations for best results.
When This Matters Most
Layered pouring is especially important for projects large in surface area or volume, such as tables, countertops, or castings that exceed 5cm in thickness. Ignoring proper method can cause cloudiness, warping, or cure failures—issues best avoided with careful, gradual pouring.
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Choosing the correct technique helps you achieve the clarity and strength deep pour epoxy resins promise. For more about safe epoxy resin use and curing strategies, see our main FAQ on hardener and cure times.